Apparatus for forming deodorized paper plates



.Dec. 22, 1942.. P. a. $lMMON$ APPARATUS FOR FORMING DEODORIZED PAPERPLATES Filed Oct. 22, 1941 3 Sheets-Sheet l .5 WM HM W 5 K L 0. m

. A RNEYS.

Dec. 22, 1942. P. SIMMONS 2,305,998

APPARATUS FOR FORMING DEODORIZED PAPER PLATES Filed Oct. 22, 1941 3Sheets-Sheet 2 Pll'.-i. 3 P

INVENTOR.

7 6w K J/NMUMS.

Patented Dec. 22, 1942 NITED STATES PAT EN T FFICE APPARATUS FOR FORMINGDEODORIZED PAPER PLATES 13 Claims.

This invention relates to a plate forming mechanism.

This application is a continuation-in-part of copending application,Serial No. 214,603, filed June 18, 1938, and entitled Apparatus for andprocess of forming and deodorizing paper plates.

The chief object of this invention is to provide a device whereinrelatively low cost paper stock may be formed into plates suitable formany purposes but more especially suitable for the baking of pies andthe like.

The invention is adapted to form a baking plate in such shape that thepie ingredients cannot engage the uncalendered portion of the paperstock, thereby discoloring the exterior of the plate so as to make anunsightly commercial product in the pie industry.

Heretofore, certain grades of paper board such as cardboard stock andthe like have been highly objectionable for use in a plate of thischaracter, for the reason that upon baking the article in the platethere is imparted to the article an odor from the plate and the presentinvention is directed to the removal of this odor and the apparatusdisclosed herein does remove such odor if the same be inherent in thepaper board stock utilized, whether in the body thereof or in thecalendered face if utilized.

Another feature of the invention is directed to the formation of a plateincluding a peripheral skirt about the rim portion of said plate for theprotection of the exterior surface of the plate, as beforementioned, andthis heretofore has been impossible of attainment in low tensile stock.

The chief difficulty of forming a skirt upon the rim of a plate andwhich heretofore has always prevented formation thereof without crackingor extreme buckling, has been in the failure to properly handle thepaper board stock in the initial steps of plate formation.

The present invention, therefore, so far as the process is concerned, isdirected to the proper sequential handling of the paper board stock toform a paper plate of the character previously referred to, and moreespecially from low tensile stock.

In paper dish formation, if the plates are of circular character, thepaper board stock or blank from which the same is to be formed isusually of the desired circular outline and size. In the presentinvention the stock or blank is yieldingly held in peripheral relationadjacent its periphery and is centrally held in initial position orinitial location. Thereafter, the central or well portion of the plateis formed, the stock flowing into the well by reason of the yieldingperipheral retention thereof and in opposition thereto. Previous to thefinal comple- 'ratus are usually in tempered condition.

tion of the well portion, the extreme outer peripheral portion of theplate stock is turned into skirt formation, all without the productionof fracture in the poor stock utilized, and the final step of theprocess includes the final formation of the well portion and the skirtaccompanied by a so-called ironing action thereof to remove all wrinklesand form a hard smooth surface.

The paper board discs supplied to the app..-

y tempered condition, as the same is well understood in the paper boardart, is meant dry paper board stock either having the desired moisturecontent or initially dry stock which has been subjected to moisteningusually by steam spraying. They may be of any suitable material andcertain grades of cardboard, one face of -which is calendered, may beemployed. The

calendered face is positioned upwardly. The uncalendered faceconstitutes the exterior of the plate.

In the formation of the plate, heat is utilized. This is to remove thetempering moisture included in the paper stock. The forming diearrangement is so constructed that the steam generated by the heat ofthe dies in contact with the tempered stock is driven out by the heatand pressure'and the steam carries with it all objectionable odors. Thedie arrangement, therefore, is of ventilated character for the re leaseof this generated steam.

The resulting plate so formed is substantially free from buckles,wrinkles, and more especially, fractures. The resulting plate has all ofthe advantages previously described.

One form of apparatus by which the aforesaid process may be carried outis illustrated in the drawings.

The full nature of the invention will be understood from theaccompanying drawings and the following description and claims:

In the drawings:

Fig. 1 is a vertical sectional view through the top portion of thefemale die structure and the superposed male die structure, parts of thesupport for the latter and associated mechanism being shown inelevation, the parts being shown in the final plate forming position.

Fig. 2 is a similar sectional view of the female die portion, itssupport, and with a disc of paper board stock associated therewithpreliminary to subsequent formation thereof into plate form.

Fig. 3 is a view similar to Fig. 1 but illustrates the parts in theinitial position with the disc of paper board stock included between thetwo forming dies.

Fig. 4 is a bottom plan view of the male die structure.

Fig. 5 is a top plan view of the female die structure.

' tardation or hindrance by sleeve 3|, thereby In the drawings, itindicates the main base portion of the plunger having the body portionll reciprocable by any suitable means and apertured as at l2. The baseis apertured as .at l3 and a rod I4 is slidable therein and its upperend is threaded and mounts a nut l5 within the chamber l2. A die headincludes the base portion 16 and the same is suitably secured to thebase portlon l0 asmt H. The head portion l6 includes a dependingcylindrical portion it which is recessed, providing the chamber l9.

Extending upwardly into said chamber is a collar portion 20 carried bythe transverse portion 2| of the cylindrical portion. This forms achannel 22 in which is mounted a suitable heating-,

rality of elongated slots 21 adapted to receive bolts 28 carried by thecylindrical portion it. These serve as guides and stops, the stopfunction being illustrated by comparing the right hand portions of Figs.1 and 3. This collar portion is reduced as at 29 forming a cylindricalwall 30. Slidably supported thereby is another collar portion I! havinga forming lower end 32.

y The collar member 28 in the portion ll thereof is provided withlongitudinally directed elongated slots 33. The collar 3! is" providedwith guide pins 34, each of which rides in a slot 83.Laterallyprojecting lugs 35 upon the skirt forming member 3| mountupwardly extending pins or abutments 38 as at 31. These pins extendthrough apertures 38 in the laterally directed lug portions 50constitute the thimble. A heavy coil spring 52 is interposed betweenflange 49 of the thimble and th lower face of the base portion III ofthe plunger structure. It normally constrains the thimble away from thebase structure It, as shown in Fig. 3.

Reference will now be had more especially to Figs. 2 and 3. In Fig. 2the numeral 53 indicates the bed of the machine apertured at 54.Suitably secured thereto as at 55 is the flange portion 56 ofthe femaledie structure. This extends upwardly as at I! and is hollowed out as atIt to form a chamber, the same having external communication through thepassages 50. The upper portion of this chamber is closed as at andcoaxial therewith is 9. depending portion 6| threaded as at 62 toreceive a lock nut 63 which retains, in the chamber in the annularchannel resulting from such formation, an electric heating elementstructure 64 supplied with energy by the lines which extend through oneof the passages 59.

Slidably supported in the central aperture 8' is a plunger element 10.This plunger element has at its lower end a bore ll threaded as at 12 toadjustably receive the threaded end 13 of a bolt structure 14. The boltstructure 14 has its head portion bearing on the lower face of thestirrup I5 suitably secured as at 16 to the bed of the machine 53 withinthe chamber 58 of the female die structure. A coil spring TI bears onthe inner face of said stirrup at one and the lower end and the upperend of said spring 11 bears Theupper end of the female die structureincludes a chamber or well 14 complementary in 40 upon the collar 26,the lug and collar beingapertured at 4| to form a chamber into which thepin portion 3i projects. A coil spring 42 seats, against the lowerportion of the chamber 4! at A plurality of springs II has one endsecured to an anchor I02 carried by lug 40. The

other end of the spring IN is secured to an anchor I03 carried by lug3E. The springs normally constrain collar 3| into contact with face 28of collar 24. Hence, as illustrated in Fig. 3, collar 3| in --initialposition does not engage the sheet A.

form to the portion 46. Its lower end is elongated into cylindricalformation as at I9. Ex-

' tending from the exterior and inwardly into this its lowerend andbears against the lower face y of the portion it at its upper end andencircles plnli.

The normal rest position of the several portions of the male device isshown in Fig. 3 and in this figure it will be noted the pin 38 projectsabove the top of the collar 28 about Vs".

tlon can draw, in opposition to these faces, and

passages 8|.

and upward directions and in radial arrangement, are a plurality ofother passages 82. These passages at their inner ends communicate as at83. The upper end of the plunger 10 mounts ahead structure '4 laterallyenlarged as at 85 and the enlarged or outwardly directed flange Fig. 3,for reception of the lower end of the col- Slldably supported in'thecentral bore 40 of the portion 20 is a stem 44. This stem is centrallyapertured as at 45 and slidable therein is 4 to slide therethrough.Portions 44. 49 and 75 lar portion or skirt forming ring 3| in finalplate formation operation. The rod 45 bears on the upper surface of thesheet A when the male die is positioned immediately adjacent the femaledie, as shown in Fig. 3. The lower face of the paper blank rests uponthe head portion 84 of the plunger 10. Thus, the blank is localizedcentrally. At the same time the sleeve 26 at its lower end 28a restsupon the blank in spaced relation to the central engagement while theunder-face of the paper board blank is engaged by the surface inregistration with the face 26a. The skirt forming collar 3| is free fromblank engagement due to springs IN,

- As the upper die is brought down. the head portion 56 forces its wayinto the well and at the same time carries with it the paper board stockand this is permitted because only springs 4i and gravity operate onthesleeves that hold the blank on the annular surface 9|. Near the endof this movement the upper ends of the pins 36 engage the lower face ofthe portion l6 and thus the outer skirt forming ring is caused to moverelative to the intermediate ring 28A and in opposition to springs ll.This position is not illustrated in the drawings.

Immediately thereafter, continued movement of the die structure, onetoward the other, causes the blank at its well portion to be firmlygripped between the portion 46 and well surface in the female die.Continued movement of the die then causes the portion Hi to movedownwardly into contact, as shown in Fig. l, with the top of the portion46. In this same movement or rather at the end thereof, the top of theinter mediate ring 28 may engage the under-face of the portion IE or thetravel may be limited by the bolts 28. Also, contemporaneously with thismovement through the pins 36, the remainder of the relative travel ofthe outeror skirt forming ring relative to the intermediate ring isefiected.

The resulting operation is as follows: The first step is the positioningand gripping of the paper disc. The second step is the well formationand the arranging of the stock in the well portion so as to have aminimum amount of wrinkling. The third step isthe initial formation ofthe skirt portion on the rim and the fourth and final step in theformation of the plate, is the ironing out of all of the irregularitiesin the skirt, rim and well portions of the plate. This also is theholding, curing and deodorizing position or operation stage.

It is also to be understood that the heatin elements are energized forheating both the male and female heads. It is also to be understood thatwhen calendered stock is utilized, the calendered face thereof ispositioned uppermost.

If the stock is tempered, and it usually is, the

application of heat not only irons the stock but dries it out in theheld shape. In this drying operation the gases, or rather the steamgenerated incident to the drying operation, escapes through the passagesbefore described. This steam as it discharges carries with it any andall 013,190-- tionable odors and the like.

Following the formation of the plate as described, the male die iselevated and in the event the plate moves upwardly with the male die,the

weight of the rod It and its nut i is suiiicient to insure gravityactuation thereof so that same will drop relative to its position, asshown in Fig. 1, and cause the plate to be discharged therefrom if'theplate adheres to the elevating die. In the event the plate does. notelevate with the male die but remains seated in the the same relativethereto has been omitted intentionally, since such instrumentalities arewell known in the paper board plate industry.

The foregoing apparatus, therefore, is an example of mechanism arrangedto form a plate having the characteristics described and from stock ofth character described and in a manner set forth in the foregoing, thebasic invention herein being the apparatus for practicing the same.

Collar and sleeve are used interchangeably herein and in the claims.

While the invention has been described in great detail in the foregoingspecification, the same is intended solely for illustrative purposes andnot in any sense to be construed as restricfemale die arrangement and amale die arrangefemale die upon elevation and separation of the 'ment,one arrangement being movable toward and away from the other for plateformation, the male arrangement including a central portion and twosleeve portionsiabout the central portion and movable relative thereto,one sleeve portion enveloping the other sleeve portion, the femalearrangement including a well portion for the reception of thecentralportion, an adjacent surface p rtion for cooperation with theinner sleeve portion, and having a relieved portion adjacent said lastmentioned surface for cooperation with the outer sleeve portion, theinner sleeve portion being constrained toward the female atrangement,and means constraining the outer sleeveportion away from the femalearrangement. I

, 2. Apparatus as defined by claim 1, character ized by the well portionincluding a plurality of ventilating apertures.

3. Paper plate forming apparatus including a female die arrangement anda male die arrangement, one arrangement being movable toward and awayfrom the other for plate formation, the male arrangement including acentral portion and two sleeve portions about the central portion andmovable relative thereto, one sleeve portion enveloping the other sleeveportion, the female arrangement including a well portion for thereception of the central portion, an adjacent surface portion forcooperationwith the inner sleeve portion, and having a relieved portionadjacent said last mentioned surface for cooperation with the outersleeve portion, means positively constraining the inner sleeve portiontoward the female arrangement, and means constraining the outer sleeveportion away from the female arrangement.

4. Apparatus as defined by claim 3, characterized bythe well portionincluding a plurality of ventilating apertures.

5. Paper plate forming apparatus including a female die arrangement anda male die arrangement, one arrangement being movable toward and awayfrom the other for plate formation, the male arrangement including acentral portion and two sleeve portions about the central portion andmovable relative thereto, -one sleeve portion enveloping the othersleeve portion, the female arrangement including a well portion for thereception of the central portion, an adjacent surface portion forcooperation with the inner sleeve portion, and having a relieved portionadjacent said last mentioned surface for cooperation with the outersleeve portion, the central portion of the male arrangement havingmovement relative to the remainder thereof, and means yieldingly 5constraining the central portion toward one position, said centralportion being movable in an opposite direction to another position whenthe well and central portions have operative engagement and by reasonthereof, the inner sleeve portion being constrained toward the femalearrangement, and means constraining the outer sleeve portion away fromthe female arrangement.

6. Paper plate forming apparatus including a female die arrangement anda male die arrange-- ment, one arrangement being movable toward and awayfrom the other for plate formation, the male arrangement including acentral portion and two sleeve portions about the central portion andmovable relative thereto, one sleeve portion enveloping the other sleeveportion, the female arrangement including a well portion for thereception of the central portion, an adjacent surface portion forcooperation with the inner sleeve portion, and having a relieved portionadjacent said last mentioned surface for cooperation with the outersleeve portion, the central portion of the male arrangement havingmovement relative to the remainder thereof, and means yieldinglyconstraining the central portion toward one position, said centralportion being movable in an opposite direction to another position whenthe well and central portions have operative engagement and by reasonthereof, means positively constraining the inner sleeve portion towardthe female arrangement, and means constraining the outer sleeve portionaway from the female arrangement.

7. Apparatus as defined by claim 1, characterized by the well portionincluding a plurality of ventilating apertures, the plate engagingsurface of the well portion being suitably relieved to provideintercommunication of said apertures when the plate is engaged with thewell portion plate engaging surface. 4

8. Apparatus as defined by claim 3, characterized by the well portionincluding a plurality of ventilating apertures, the plate engagingsurface of the well portion being suitably relieved to provideintercommunication of said apertures when the plate is engaged with thewell portion plate engaging surface.

9. Paper plate forming apparatus including a female die arrangement anda male die arrangement, one arrangement being movable toward and awayfrom the other for plate formation, the male arrangement including acentral portion and two sleeve portions about the central portion andmovable relative thereto, fine sleeve portion enveloping the othersleeve portion, the female arrangement including a well portion for thereception of the central portion, an adjacent surface portion forcooperation with the inner sleeve portion, and having a relieved portionadjacent said last mentioned surface for cooperation with the outersleeve portion, the adjacent surface portion and the inner sleeveportion forming a rim on the plate and the relieved portion, and outersleeve portion forming a downturned skirt on the rim periphery, theplate being completely formed from flat paper board stock in a singlerelative movement between the arrangements,

the inner and outer sleeve portions each having telescopic movementrelative to the central portion, the inner sleeve portion beingconstrained toward operative engagement withthe female arrangement, andmeans positively constraining the outer sleeve portion away fromengagement with said female arrangement, the constraint of said meansbeing overcome during the inner sleeve portion relative movement,to-wit, during the bodily movement of the inner sleeve portion and theouter sleeve portion toward the female arrangement.

10. Paper plate forming apparatus including a female die arrangement anda male die arrangement, one arrangement being movable toward and awayfrom the other for plate formation, the male arrangement including acentral portion and two sleeve portions about the central portion andmovable relative thereto, one sleeve portion enveloping the other sleeveportion, the female arrangement including a well portion for thereception of the central portion, an adjacent surface portion forcooperation with the inner sleeve portion, and having a relieved portionadjacent said last mentioned surface for cooperation with the outersleeve portion, the adjacent surface portion and the inner sleeveportion forming a rim on the plate and the relieved portion and outersleeve portion forming a downturned skirt on the rim periphery, theplate being completely formed from flat paper board stock in a singlerelative movement between arrangements, the inner and outer sleeveportions each having telescopic movement relative to the centralportion, the inner sleeve portion being constrained toward operativeengagement with the female arrangement, means positively constrainingthe outer sleeve portion away from engagement with said femalearrangement, the constraint of said means being overcome during theinner sleeve portion relative movement, to-wit, during the bodilymovement of the inner sleeve portion and the outer sleeve portion towardthe female arrangement, the central portion of the male arrange- 5nien't being of dual and concentric character, the

inner part of the central portion having movement relative to the outerpart of the central portion, and other means yieldingly constraining theinner part of the centralportion toward one position, said inner part ofthe central portion being movable in an opposite direction to anotherposition when the well and both parts of the central portions haveoperative engagement and by reason of such engagement.

11. Apparatus as defined by claim 9, characterized by the well portionincluding a plurality of ventilating apertures.

12. Apparatus as defined by claim 9, characterized by the well portionincluding a plurality of ventilating apertures, the plate engagingsurface of the well portion being suitably relieved to provideintercommunication of said apertures when the plate is engaged with thewell portion plate engaging surface.

13. Apparatus as defined by claim 10, characterized by the well portionincluding a plurality of ventilating apertures, the plate engagingsurface of the well portion being suitably relieved to provideintercommunication of said apertures when the plate is engaged with thewell portion plate engaging surface.

PAUL R. SIMMONS.

